Alarm buzzer and accessory

Alarm buzzer apparatus

Alarm buzzer device

Alarm circuit

Alarm circuit for generating syllable-pause alarm codes

Alarm driving signal generator

Alarming apparatus

Analog graphic display method and apparatus

Animal deterrent using vehicle horn

Animal warning alarm

Animal warning system employing ultrasonic sounds and infrared o

Annunciator circuit for elevator systems

Annunciator for use with electronic digital clock

Annunciator readout unit

Apparatus and method for the generation of directionally percept

Apparatus for generating auditory indicators

Apparatus for generating signals corresponding to characters to

Apparatus for producing a plurality of audio sound effects

Apparatus for transferring information between electronic displa

Apparatus to deter birds with ultrasound